Fixes, working rspamd settings, generate DKIM keys in PHP

data/conf/rspamd/local.d/metrics.conf

@@ -1,3 +1,8 @@
+actions {
+	reject = 15;
+	add_header = 5;
+	greylist = 4;
+}
 symbol "MAILCOW_AUTH" {
 	description = "mailcow authenticated";
 	score = -20.0;

data/conf/rspamd/local.d/rspamd.conf.local

@@ -0,0 +1 @@
+settings = "http://nginx:8081/settings.php";

data/conf/rspamd/lua/rspamd.local.lua

@@ -10,5 +10,3 @@ rspamd_config.MAILCOW_AUTH = {
 rspamd_config.MAILCOW_MOO = function (task)
 	return true
 end
-
-rspamd_config:add_map('http://nginx:8081/settings.php', "settings map", process_map)